Answer:
x>-6 shade to the right, 12> x shade to left
Step-by-step explanation:
In general, the probability of a disjunction is
In this case, A and B are mutually exclusive, so 
This simplifies the formula to
Answer:
x=303/8
Step-by-step explanation: Yes, I know it looks weird but this is what my calculations have told me. I plugged that number back into the equation and it works so it should be correct unless I misread your question.
Answer:
Step-by-step explanation:
5 red
15 black
10 white
altogether the is 30 marbles so that means it is 'out of' 30
and because the is 5 red it would be 5/30
and because the is 10 white it would be 10/30
that should be the answer but if you have to work the total all together then it would be 15/30
hope this helps :)
